Roller temple for weaving machines



Feb. 21, 1961 i E. PFARRWALLER ETAL 2,972,361

ROLLER TEMPLE FOR WEAVING MACHINES Filed July 2, 1958 IN V EN TOR. E/PW/N PFA EEWAL L 5/2.

United? States i 1 ROLLER TEMPLE FOR WEAVING MACHINES Erwin Pfarrwaller and Hans Dernuth, Winterthur, Swit zerland, assignors to Sulzer Freres S.A., Winterthur, Switzerland, a corporation of Switzerland Filed July 2, 1958, Ser. No. 746,133

Claims priority, application Switzerland July 18, 1957 8 Claims. (Cl. 139-297) The present invention relates to a roller temple for weaving machines in which the needle rollers are in inclined position and rotatably supported .by means of elliptical support rings which are placed on a shaft, elliptical end elements being mounted on the shaft with the aforesaid elliptical support rings placed between the end elements for confining the support rings between the end elements.

In the conventional roller temples the elliptical supports for rotatably supporting the needle rollers in an inclined position and end elements between which the supports are placed are directly mounted on a shaft and pressed together by means of a nut screwed onto the shaft.

Because of the inclined position of the support rings and the great pressure exerted when the nut on the shaft is tightened it happens quite frequently that the edges of the bores of the support rings through which the shaft extends out into the shaft. This makes it difiicult to interchange or replace the needle rollers by different needle rollers as is required when the type of the fabric to be woven is changed. It also hinders angular adjustment and placement of the roller supports which must be turned clockwise or counterclockwise depending on the desired pulling effect of the temple. If the sharp edges on the bores of the roller carriers did work into the shaft, it is not only difficult to pull the respective carriers off the shaft but also to pull any of the other carriers past a locality of the shaft where the shaft surface is damaged. The bores of the needle roller carriers must accurately fit on the shaft because, otherwise, the needles do not uniformly project from all rollers and harm the fabric.

It is an object of the present invention to provide a roller temple avoiding the shortcomings of conventional roller temples. In the temple according to the invention a sleeve is interposed between the shaft and the needle roller carriers whereby the latter are mounted on the sleeve and can be pushed on or off the sleeve as a unit including the sleeve. Several sleeves individually supporting groups of roller carriers may be axially aligned on the same shaft whereby the roller temple can be adapted to suit a great variety of weaving conditions.

The novel features which are considered characteristic of the invention are set forth with particularity in the appended claims. The invention itself, however, and additional objects and advantages thereof will best be understood from the following description of embodiments thereof when read in connection with the accompanying drawing in which:

Fig. 1 is a part sectional side view of a needle roller temple mounted on the frame of a weaving machine.

Fig. 2 is a longitudinal sectional view of a roller temple according to the invention in which a portion of the needle roller carriers and needle rollers is omitted.

Fig. 3 is a longitudinal part sectional view of a modified sleeve supporting the needle roller carriers according to the invention.

" 2,972,361 Patented Feb.21,p1961 Fig. 4 is a longitudinal section of a modified temple according to the invention.

Fig. 5 is a longitudinal sectional view of another modification of a roller temple according to the invention.

Fig. 6 is a cross sectional view of the. temple shown in Fig. 5, the section being taken at a place where the roller carriers are omitted in Fig. 5.

Fig. 7 is a longitudinal sectional view of a modified sleeve according to the invention.

Referring more particularly to Fig. 1 of the drawing, numeral 10 designates a casing to which a support 11 for a temple is bolted. A shaft 12 is connected to the support 11,- a needle roller and carrier assembly 13 being coaxially placed on the shaft 12, the assembly 13 being pressed against the support 11 by means of a nut 14. A temple cover 15 is made fast by screws 16 on a cover support 17 which is secured to the casing 10 above the roller and carrier assembly 13. The latter is composed of a plurality of elliptical stationary support elements 18 rotatably supporting needle rings or rollers 19.. On the left end of the assembly 13 is an elliptical end element 21 abutting against the shaft support 11 and on the right end of the assembly 13 is an inclined end ring 22 abutting against the nut 14. The elements 18, 21, 22 are mounted on a tubular member or sleeve 23 so that the whole set, including the sleeve, can be conveniently slipped on and off the shaft 12. The end elements 21 and 22 project somewhat beyond the end of the tube to afford compression of the supports 18 upon tightening of the nut 14.

As seen in Fig. 2 the elliptical end member 21 forms a bearing for the leftmost needle roller 19. The sleeve 23 which supports all elements 18, 21 and 22 has flared ends 24 for holding the elements on the sleeve.

The modified sleeve 25 shown in Fig. 3 has a flange 26 on the left end and an annular groove 27 on the right end for receiving a resilient ring 28.

The end elements 21 and 22 are preferably provided with annular recesses 29 accommodating the flared ends 24 or the flange 26 and the resilient ring 28.

Fig. 4 shows a modification in which a resilient or split ring 2% is provided on each end of tubular means which are composed of two axially aligned sleeves 31. The ends 32 of the sleeves facing each other are flared and inclined to fit into annular recesses provided on the elliptical elements 18 which are at the ends of the sleeves facing one another.

In the embodiment of the invention shown in Figures 5 and 6 the sleeve 33 supporting the elements 18, 21 and 22 is provided with an axial slot 34 affording slight radial compression of the sleeve for resiliently pressing the sleeve against said elements.

Fig. 7 illustrates a sleeve 35 having a helical slot 36 producing a similar effect as the longitudinal slot 34 of the sleeve 33 shown in Figures 5 and 6.

The interposition of a sleeve between the roller carriers and the shaft 12 prevents damage of the latter by the carriers and mounting and removal of the carriers or of sets of carriers and rollers is facilitated. Because of the provision of a sleeve a whole set of carriers and needle rollers can be rotated relatively to the shaft 12 whereby adjustment of the elliptical elements is made easy.

The arrangement according to the invention has the additional advantage that complete needle roller sets can be held in stock and quickly mounted and dismounted and the correct needle roller set for each type of weave can be quickly and conveniently installed and need not be assembled from individual rollers when a different fabric is intended to be woven.

If groups of like rollers are mounted on individual sleeves as in the embodiment shown in Fig. 4 groups of differently shaped needle rollers can be aligned on the same shaft so that further variations of the effect of the roller temples can be obtained.

The arrangement of a groove and resilient ring at the end of the sleeves instead of fiaring'the ends of the sleeves facilitates cleaning of the needle .roller sets.

When using resilient sleeves .as shown .in Figures .5 to 7 the end elements 21 and .22 need not be provided with internal annular recesses. The sleeves are preferably made of a material which can he hardened. .In this way cutting of the edges of the bores of the inclined elements into the sleeve can be avoided. The provision of a slot 36 (Fig. 7) which is inclined to the shaft 12-ensures exact centric support of the elliptical discs 18 .on the shaft 12.

We claim:

1. In a roller temple for weaving machines having a shaft, a plurality of axially juxtaposed roller supports surrounding saidshaft and being slanted with respect to the longitudinal axis of the shaft, a plurality of needle rollers individually rotatably supported by .said roller supports to rotate on axes which are inclined with respect to the longitudinal axis of said shaft, and end elementssnrrounding said shaft for confining said supports between said elements: a sleeve adjacent to and surrounding said shaft, said roller supports and said elements being mounted on said sleeve, said sleeve, said roller supports-said elements and said rollers forming a self-contained unit easily mountable on and demountable from said shaft.

'2. In a roller temple as defined in claim 1 and wherein said elements project beyond the ends of said sleeve, an abutment being associated. with one end of said shaft and abuttting against one of said end elements, the second A end of said shaft being threaded, and a nut being screwed on said threaded end, said nut abutting against the second end element for compressing said roller supports upon tightening of said nut.

3. In a roller temple according to claim 1 and wherein at least one end of said sleeve is'fiared for retaining said supports and said elements on said sleeve.

4. In a roller temple according to claim 1 an annular groove in at least one end of said sleeve, and a resilient ring placed in said groove for retaining saidsupports and said elements on said sleeve.

5. In a roller temple according to claim 1 a flange on at least one end of said sleeve for retaining said supports and said elements on said sleeve.

6. In a roller temple according to claim 1 and wherein said sleeve is resiliently compressible in radial direction.

7. Ina roller temple according to claim 1 and wherein said sleeve has ,a slot for making the sleeve resiliently compressible in radial direction.

8. In a roller temple according to claim 7 and wherein said slot is inclined to the longitudinal axis of the slot.

References Cited in the file of this patent Great Britain Feb. 7, .1924 

